by Thomas Rodham Wells
The contemporary animal rights movement owes a great intellectual debt to Peter Singer's pathbreaking book ‘Animal Liberation' (1975). In that book Singer made a break with the dominant moral argument for treating animals well, the Kantian line that mistreating animals is a bad – inhumane – thing for humans to do. In its place, Singer advanced a utilitarian case against harming animals, such as by using them for food or experiments, in terms of respecting their right to have their suffering counted equally with that of humans.
Singer's book has had an enormous influence, directly and indirectly, on how many people see the moral status of animals. I include myself among them. But nevertheless I am not sure it is a good book. Despite its rhetorical effectiveness and despite going through multiple revised editions, Singer's official argument is far from compelling. And this is a problem for the animal rights movement. For if Singer's utilitarian account is only a kind of sentimentalism in academic drag then the intellectual respectability it has granted the animal rights movement is a sham. Singer's utilitarianism can't do the job it is supposed to do – it can neither justify the normative conclusions of the book nor meet the minimalist standard of internal coherence. Furthermore, the domination of Singer's flawed argument in the intellectual self-understanding of the animal rights movement may be crowding out other more relevant ethical accounts, most obviously those that directly engage with sentimentalism rather than being embarrassed by it.
In this essay I will focus on the utilitarian case for vegetarianism. Singer argues for the moral recognition of the suffering of animals in the livestock industry and exhorts his readers to end it by not eating meat. But both the form and content of his argument are open to strong challenges.